Chemistry, 22.06.2021 04:30, eylinglez3ovm16v
Titrate 100.0 ml of 0.10M Fe2+ solution with 0.10M Ce4+ solution. Calculate the potential of the solution when 90.0 ml of Ce4+ is added. Knowing E0(Fe3+/Fe2+) = 0.77V ; Knowing E0(Ce4+/Ce3+) = 1.45V.
a.
0.57V
b.
0.67V
c.
0.83V
d.
0.71V
Answers: 1
Chemistry, 22.06.2019 03:40, allyyzz
Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)
Answers: 3
Chemistry, 22.06.2019 04:00, tifftifftiff5069
You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present
Answers: 1
Chemistry, 22.06.2019 16:00, hjgjlgkjg
Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy
Answers: 1
Titrate 100.0 ml of 0.10M Fe2+ solution with 0.10M Ce4+ solution. Calculate the potential of the sol...
Mathematics, 20.11.2020 20:40
Chemistry, 20.11.2020 20:40
English, 20.11.2020 20:40
Mathematics, 20.11.2020 20:40
Mathematics, 20.11.2020 20:40